Carburetor



Sept. 22, 1925. 1,554,476

' C. A. WINSLOW CARBURETOR Filed Oct. 21 2 Sheets-Sheet 2 30 v /33 & /1 59 Patented Sept. 22, 1925.

UNITED STATES CHARLES A. WINSLOW, OF VALLEJO, CALIFORNIA.

CARBURETOR.

Application filed October 11, 1921. Serial No. 507,159.

To all whomit may concern:

Be it known that I, CHARLES A. WINS- Low, a citizen of the United States, residing at Vallejo, in the count-y of Solano and State of California, have invented certain new and useful Improvements in Carburetors; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. i

This invention has for its object to provide an improved carburetor of that type in which various grades of liquid fuel may be utilized.

Another object is to provide an improved carburetor in which the air admitted through the air port'is circulated about the bowl containing the relatively low grade of fuel, so as to assist in heating the fuel.

Another object is the provision of a novel type of spraying nozzle by which the liquid fuel is thoroughly atomized and mixed with the incoming air. I

With these and other objects in view, the invention consists in the novel construction, combination and arrangement of parts as will be hereinafter specifically described, claimed and illustrated in the accompanying drawings, in which:

Figure 1-represents .a longitudinal sectional view through the improved carburetor;

Figure 2 represents a horizontal sectional view on the line 22 of Figure 1;

Figure 3 represents a vertical sectional view on the line 3-3 of Figure 1,

Figure 4 represents a longitudinal sectional view through several part-s of the carburetor detached,

Figure 5 represents a fragmentary hori- .zontal sectional View through the carburetor, illustrating the adjusting means for the relatlvely ad ustable part of the spraying nozzle in detail and Figure 6 is a cross sectional view taken onthe line 6-6 of Figure 3.

Referring to the drawings in detail, wherein similar reference numerals designate corresponding parts throughout the several views, the numeral 10 indicates generally the body or shell of the carburetor which is provided at one terminal with .a hollow extension constituting an air inlet ort 11, having communication with the internal air chamber 12. A bowl or container 13 having an internal chamber 14 for the reception of the float 15 is arranged adjacent the end of the body 10 having the inlet port 11 therein, and is provided with a removable cover or cap 16', which may be removed to facilitate adjustment of the float 15. A liquid fuel pipe 17 is secured in the bottom of the body 10 and communicates by a restricted passage 18 with the float cham: ber 14, where v a relatively low grade of liquid fuel is admitted thereto. An inwardly closing valve 19 is adapted to seat in the restricted passage 18 to control the passage of liquid fuel to the chamber 14 and is provided with a stem 20 to which the float 15 is detachably secured.

The end of the body 10 opposite the inlet port 11 is provided with a bowl or container 21 for containing a relatively high grade of liquid fuel, and communicates by a restricted passage 22 with an inlet sup ply pipe 23, whereby the fuel is conducted to the internal chamber 24 of the bowl 21. A vertically movable float 25 is arranged in the chamber 24 and is detachably secured in position upon the stem 26 of a valve 27,

which latter is arranged in the restricted passage 22 and controls the admission of liquid fuel to the chamber 24.

As is clearly evident by reference to Figures 1 and 2, the side walls of the body 10 are arranged in spaced relation to the container or bowl 13 for the relatively low ade of fuel, thereby providing an air chamber 28 of substantially annular formation, which practically encloses the bowl 13.

In applying the improved carburetor to use, the inlet port 11 is preferably connec ed with a preferred type of air heater (notwhereby theheated air which is shown),

about the bowl 13 effectively circulated heats the liquid contents thereof so as to insure a more rapid atomization of the relatively .low grade of fuel.

The bow-ls 13 and 21 are arranged in spaced relation and are connected with each other by the side and bottom walls of the body 10. The upper terminal of the space between the bowls 13 and 21 constitutes the outlet port of the carburetor and receives a suitable type of coupling 29, whereby the outlet port of the carburetor is connected with the inlet manifold of an explosive engine. A jacket 29 encloses the coupling 29, providing a water chamber 29", adapted to receive warm Water to accelerate heating 4 shown) of the explosive mixture prior toits admission to the cylinders of the engine. A member 30, consisting of two opposed cone segments, is formed integral with the lower portion of the coupling member 29, and is provided with a vertical tubular extension 31, receiving and supporting the upper terminal of a stem 32 to whicha valve 33 is secured. The member 30 constitutes a seat for the valve 33, and the spaces 34 between the segments of the valve seat provide ports which, when alined with the ports 35 in the valve, permit the carbureted air to pass upwardly through the carburetor. As clearly shown in Figure 3 of the drawings, the valve stem 32 extends downwardly through an air tube 32 formed in the body 10, and is provided atits lower terminal with a laterally projecting arm 36, adapted to be connected with the throttle lever of the engine (not The bottom of the tube 32 is formed with a plurality of ports 32 which, when the throttle is only partly open, are closed by a shutter or valve 32 carried by the stem 32. However, as the throttle valve is opened, the ports 32 inthe shutter 32 are moved into registration with the ports in the air tube 32, thus admitting an additional supply of air to the interior, of the carburetor.

The end of the carburetor body 10 adjacent the inlet port 11 is formed with a vertical passageway 37, receiving a slide valve 38, having a port 39 therein for controlling the passage of air to the interior of the body 10. The upper terminal of the valve 38'is connected by a link 40 with one arm of a bell crank 41, which is pivotally supported by a; arm 42 attached to the coupling member 2 The lower portions of the two bowls or containers 13 and 21 are connected by a horizontally disposed fuel tube 44, which is enlarged centrally, as indicated at 45, to provide a valve chamber in which is arranged a rotary valve 46, having a substantially L-shaped port 47 therein. The valve 46 is provided with a stem 48, which extends exter-iorly of the carburetor body 10, and is preferably connected with a preferred type of adjusting means whichis extended to the dash-board or other place within convenient reach of the operator of the vehicle, whereby the valve may be adjusted to utilize the fuel from either of the containers, as desired. The fuel tube 44 is connected with a'hollow vertical extension 49 and the valve 46is designed to control the passage of the various grades of fuel from the two bowls or containers to the vertical extension 49, or if de-' sired, to completely cut off communication between the bowls and the extension.

The upper terminal of the extension 49 is connected with the relatively stationary and lower part 50 of the spraying nozzle, which is of circular formation and is designated generally by the numeral 51. The lower nozzle part 50 is formed with an annular fuel chamber 52, having the inner wall extended vertically to provide a flange 54 having an upwardly and inwardly inclined,

outer surface 53. The nozzle part 50 is formed with external screw threads adapted to be received within the internally screw threaded lower terminal 55 of the adjustable nozzle part 56, having an inclined inner surface 56, which, when the nozzle parts are assembled, lies opposite the inclined surface 53 of the nozzle part 50, so that by properly adjusting the nozzle part 56 with relation to the part 55 by the shaft 61, the width of the circular passage 57 between the nozzle parts may be varied, as desired. The lower edge of the valve 33 is increased in width i series of gear teeth 59, which are engaged" with a worm or screw 60' supported upon a shaft 61 arranged in the body 10 of the carburetor. One terminal of the shaft 61 is extended through one side of the body 10 and is provided with a knob 62, whereby the shaft may be conveniently rotated by hand so as to effect the desired adjustment of-the adjustable nozzle part 56, and increase or decrease the width of the space 57 by moving the part 56 towards and from the groove of the valve so as'to secure the desired proportion of air and vaporized fuel. An auxiliary nozzle 63 for admitting moistened air or steam to the mixture is extended through one wall of the body 10 and into bell crank 41, and the incoming air-which is heated by contact with the exhaust pipe, or in any other desired manner, circulating about the bowl 13 containing the relatively low grade of fuel effectively heats the fuel prior to its admission to the nozzle 51. The

incoming air is drawn upwardly, during the suctionv stroke of the piston of the engine, on both sides of the circular nozzle 51 and a quantity of liquid fuel is drawn through the circular passage 57 and is mixed with" the incoming air. As the valve 33 is opened a greater portion of the fuel passage 57 is uncovered and thus a greater quantity of liquid fuel is rmitted to mix with the incomin air. hen the throttle is opened to a pre etermined point, the valve or shutter 32 uncovers the ports in the lower terminal of the air tube 32, thus admitting an additional su ply of relatively cool air to the interior 0 the carburetor.

What I claim is 1. A carburetor including a mixing and distributing tube, a partition located within the tube and having openings, a fuel nozzle located within the tube immediately below the partition, and having a discharge opening, a valve located between and engagin said partition and said nozzle and adapte to be adjusted to vary the size of the openings in said partition and the size of the discharge'opening of said nozzle, said nozzle being located in close proximity to said valve so that the fuel is discharged into the tube at the point where the entering air attains its highest velocity. v

2. A carburetor including a mixing and distributing tube, a partition located within the tube and having openings, an annular fuel nozzle located within the tube immediately below the partition and having a discharge opening in its upper edge in alinement with each opening in said partition, a valve located between and engaging said partition and said edge of said nozzle and adapted to be adjusted to vary the size of the openings in said partition and the size of the discharge opening of said nozzle, said nozzle being located in close'proximity to said valve so that the fuel is discharged into the tube at the point where the enter-- ing air attains its highest velocity.

3. carburetor including a mixing and distributing tube, a conical partition located within the tube and having openings, ana'n-' nular fuel nozzle located within the tube immediately below the partition and having a discharge opening in its upper edge, and a valve including spaced cone segments located between and engaging the partition and said edge of said nozzle and adapted to be adjusted tov vary the size ofthe openings in said partition and the size of the discharge opening in said nozzle, said nozzle being located in close proximity to said valve so that the fuel is discharged into the tube at the point where the inflowing air attains its highest velocity.

4. A carburetor includinga mixing and distributing tube, a partition located within the tube and having openings, an annular fuel ring located in the tube below the partition and having its upper edge open, an annular nozzle threaded to said ring and located over said edge of the latter, means for adjusting the nozzle on the ring, and a valve located between and engaging said partition and the upper edge of the nozzle and adapted to be adjusted to vary the size of the openings in said partition and the size of the discharge opening of said nozzle, said nozzle being located in close proximity to said valve so that the fuel'is discharged into the tube at the point where the inflowing air attains its highest velocity.

5. A carburetor having a mixing chamber connected by a passage with an air supply chamber, an annular fuel nozzle in communication with a source of supply and having an annular outlet orifice, said nozzle forming an annular valve seat, a second valve seat being arranged in the said passage in co-axial' opposed relation with the annular valve seat, and a manually actuable valve arranged between. and upon said seats and mutually controlling the passage of air and fuel.

In testimony whereof I aflix my signature.

CHARLES A. WINS-LOW. 

